IBENA- In order to strengthen necessary measures to manage foreign exchange market in informal market and based on information obtained about the way of supplying foreign currency by some importing companies From this date onwards, it is forbidden to allocate foreign currency to all companies that buy foreign currency in free market before allocation, and no allocation can be made without my approval, according to report and cited by public relations of central bank, Dr. Mohammad Reza Farzin, in a correspondence with vice president of foreign exchange of this bank, emphasized.